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Abstract #1690

23Na in vivo MRI with 1mm isotropic resolution and real-time prospective motion correction implemented in Pulseq

Maxim Zaitsev1, Olgica Zaric2, and Sigfried Trattnig2
1High Field MR Center, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria, 2High Field MR Center, Department of Biomedical Imaging and Image- Guided Therapy, Medical University of Vienna, Vienna, Austria


Sodium imaging has a great potential for basic research and clinical MRI, but its applications are limited due to poor SNR achievable in typical in vivo scanning times. Image acquisition times can be substantially extended if involuntarily subject motion is compensated for, e.g. by using an external optical motion tracking system. In this proof-of-concept study we demonstrate 1mm isotropic 23Na MRI with the achieved image quality sufficient for the anatomical orientation based on the native sodium images. The used ultra-short echo time 3D imaging sequence was implemented in Pulseq, an open-source platform-independent development environment.

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